phosphoric acid

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phosphoric acid

 [fos-for´ik]
a crystalline acid formed by oxidation of phosphorus; its salts are called phosphates.

phos·phor·ic ac·id

(fos-fōr'ik as'id),
Orthophosphoric acid; H3PO4; a strong acid of industrial importance, m.p. 42.35°C; dilute solutions have been used as urinary acidifiers and as dressings to remove necrotic debris. In dentistry, it constitutes about 60% of the liquid used in zinc phosphate and silicate cements; solutions in varying concentrations are used to etch enamel and dentin surfaces prior to application of various types of resins.

phos·phor·ic ac·id

(fos-fōr'ik as'id)
A strong acid of industrial importance; dilute solutions have been used as urinary acidifiers and as dressings to remove necrotic debris. In dentistry, it comprises about 60% of the liquid used in zinc phosphate and silicate cements; solutions are used for conditioning enamel surfaces before applications of various types of resins.

phosphoric acid

an important component of NUCLEIC ACIDS, connecting the pentose sugars to form a POLYNUCLEOTIDE CHAIN.

phos·phor·ic ac·id

(fos-fōr'ik as'id)
Orthophosphoric acid. In dentistry, it constitutes about 60% of the liquid used in zinc phosphate and silicate cements; solutions in varying concentrations are used to etch enamel and dentin surfaces to improve mechanical bonds before application of various types of resins. Sometimes used as a component in zinc phosphate cement.
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The concentration of sulfuric acid and phosphoric acid used for different industrial purposes ranges from 12-40 N and when these acid solutions leak into the subsoil and are diluted, the concentration may range within 1-4 N (Sivapullaiah et al.
The prepared soil specimens were inundated with distilled water, 1N and 4N concentrations of sulfuric acid and phosphoric acid solutions as pore fluid and allowed to swell at a seating load of 5 kPa to reach equilibrium.
Similarly, phosphoric acid contamination resulted in formation of brushite, merlinoite and dawsonite minerals.
Further, the soil with sulfuric acid and phosphoric acid exhibited an equilibrium swelling of about 25% and 14%, respectively.
VOLUME CHANGE BEHAVIOR OF PHOSPHOGYPSUM TREATED CLAYEY SOILS CONTAMINATED WITH INORGANIC ACIDS A MICRO LEVEL STUDY
Then magnesium oxide, aluminum oxide, and phosphoric acid fire retardants of 10, 20, and 30% composites were investigated.
30% phosphoric acid, 10% phosphoric acid, and 30% aluminum oxide had the highest value of tensile strength (13.4 MPa), elongation at break (14.2%), and tensile modulus (0.978 GPa).
Among the treated composites, 30% magnesium oxide lost the highest weight (6.1%) and 20% phosphoric acid lost the lowest weight (1.34%) (Figure 12).
30% phosphoric acid, 10% phosphoric acid, and 30% aluminum oxide showed the highest value of tensile strength (14.5 MPa), elongation at break (12.5%), and tensile modulus (1.213 GPa).
Short Jute Fiber Reinforced Polypropylene Composites: Effect of Nonhalogenated Fire Retardants
In 2010, K-Technologies, Inc., Florida, USA ('K-Tech') ran batch scale tests using ion-exchange technology ('IX') to remove metal ions from the phosphoric acid to reduce the minor element ratio ('MER').
The pilot plant IX tests were completed on acid produced by the phosphoric acid pilot plant tests using the representative rock samples.
Phosphoric Acid Post Treatment - Pre-neutralization
Prayon has recently delivered the technical results of the pre-neutralisation tests (where phosphoric acid is partially pre-neutralised using ammonia) of the phosphoric acid made on their pilot plant from a representative sample of Chilisai rock from across the resource base area.
-Sunkar Resources plc - Technology Tests Update

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